<p>also for one of the questions it says all of the above ______ except </p>
<p>and one of the answer choices was “all of the above”
does that mean that all of the above were correct or that none of them were correct???</p>
<p>how many people take this exam?? and how many people can go to the semis?</p>
<p>about 11,000 take it… and it says top 10% make it</p>
<p>but then some people say only 500 make it, so I am not entirely sure</p>
<p>Ok here is what I mean</p>
<p>Question: Blah Blah Blah</p>
<p>Answers:
A. 111
B. 222
C. 333
D. 444
E. 555</p>
<p>Let’s say choices A and B are both correct.</p>
<p>So if someone marks A only, he/she will get 1/2 point?
If someone marks A and B, he/she will get 1 point?
If someone marks A and C, he/she will get 1/2 point for getting A but -1/2 for marking C?</p>
<p>Does anyone know how this works?</p>
<p>No half points, and I think credit is only given to fully correct answers. So like, if you said A, you would get 0. Or even A, B, C you get 0. Only choosing A, B would get points (1) I think.</p>
<p>okay thanks for the clarification</p>
<p>and in response to james,</p>
<p>if it says “all of the above except for ___”</p>
<p>It simply means that you choose the only choice above that is NOT true. But if you think all the choices are true, then choose “all of the above”</p>
<p>hey guys, i was preparing for the usabo open and came across a few quantitative genetics problems. does anyone know how to do those?? i perused through many pages of information online but still couldn’t figure out how to solve those few problems.</p>
<p>in reference to my previous post, i have just started reviewing because our school was granted an extension as to the open exam period (we have a midterm period going on right now, and so basically the school won’t be able to administer the exam until the 22nd). i would suggest that people don’t start posting questions/answers until the 23rd (or even wait an extra week to be safe)</p>
<p>^ ccerr, which ones? Are they the ones from the 2009 open? Could you pm me one of the questions? (If its 2009, tell me which #)</p>
<p>Wait so are there questions with multiple answers? Or are they all single-choice multiple choice?</p>
<p>it was definitely easier than last year’s. last year’s was insane… this year was doable.</p>
<p>Is there a penalty for guessing on the open exam? The website wasn’t really clear. For example, if you get 30 right and 20 wrong, does that give you a 10?</p>
<p>What was the cutoff last year?</p>
<p>And how does this exam compare to the 2009 exam?</p>
<p>Does anyone have the answers to the 2009 test? I have the test but not the answers</p>
<p>Are calculators allowed on the test?</p>
<p>You get a non-programmable calculator.</p>
<p>Oh man this test was insane. I didn’t study at all for this until yesterday (took 2 practice tests) and I don’t expect a great score. I won’t discuss questions because obviously some people haven’t taken this yet - but it was significantly easier (IMO) than the 04 and 06 exams, I felt.</p>
<p>wait, Ktk: are you joking? easier than the 04 and 06 exams?? That is ridiculous… those were very easy compared to 2009 and 2010, which I thought were hard, but not insane…</p>
<p>What are your cutoff predictions then? I can’t imagine them making the test that easy…</p>
<p>I thought that this year’s exam was much harder then previous years except for the 2010 open exam. I think that the cutoff will be about 26/50.</p>
<p>Clarification for Ktk: how was the test “insane” and you felt you “didn’t get a great score”, but you felt it to be significantly easier than the easiest exams? Did you mean to say significantly harder?</p>
<p>^ I used a 4 function calculator… No brand, lolol. Non-graphical, non-programmable. So a Ti-30x would work.</p>
<p>There are many reasons for this</p>
<p>Luck
All open exams have a differentiation of subjects, but in '04 and '06 I found that within these differentiations I didn’t know the facts on it. Contrastingly I found that I knew a lot of the material on the '11 exam, despite them technically being on the same subject.</p>
<p>Familiarity
Obviously, taking two exams the day before would help me become accustomed to the format of the test, how it’ll be like, getting into the groove, etc. - I find this to be very very important before sitting any exam</p>
<p>Studying
I crammed yesterday. I don’t own Campbells, I used [Life:</a> The Science of Biology (6th Ed.)](<a href=“http://www.amazon.com/Life-Science-Biology-6th-Purves/dp/0716744023]Life:”>http://www.amazon.com/Life-Science-Biology-6th-Purves/dp/0716744023) as I am now in IB Biology HL II, not AP biology.</p>
<p>Conclusion: I thought 2011 was easier than 2004 and 2006. I lucked out, I knew everything plant-related on this test, which I couldn’t say for 2004 and 2006. Not to say that there was more emphasis on one section on this test than others before it.</p>
<p>[EDIT] It was insane because I still didn’t know a solid >10 questions on this test because I, well, didn’t study the material</p>